If it was a sebaceous cyst, there are chances of it forming again over a period of time. since you say that it has formed again and is hard, what you can do is apply heat to that area to make it go away. Usually, when you get such cysts removed, sometimes they are fragmented and arent completely removed and then they reappear. try the heat application and see if that works for you, it worked for me. You can also apply warm water directly to that area while taking a shower.
Some people are prone to getting (scar tissue like raised bumps) called Dermatofibroma. They are benign and usually caused by any kind of over irritation of a hair follicle (can also occur when kids have chicken pox not that children get that anymore these days) ie rubbing of pant legs, bra straps, undergarments, headbands, etc.... forms a hard nodule/cyst that is mainly a form of scar tissue. It may have started as an ingrown hair/pimple/chickenpox/sometimes even irriation when you have 'goosebumps' etc. It turns into a form of scar tissue. If you get it removed, it may come back (due to the fact that it is in fact scar tissue in the first place. It may return larger in diameter due to the removal procedures need to remove a bit more than just the effected area.
I suggest showing your doctor to confirm. But I believe it was a dermatofibroma that your doctor should have told you may not be fixed with removal. Sometimes removal of a larger raised (scar tissue)nodule creates a flat nodule(scar tissue). If what I'm thinking it is is correct, then this is completely normal. I would definitely speak to your doctor or a dermatologist to confirm this.
Copyright 1994-2016 MedHelp International. All rights reserved.
MedHelp is a division of Aptus Health.
This site complies with the HONcode standard for trustworthy health information.
The Content on this Site is presented in a summary fashion, and is intended to be used for educational and entertainment purposes only. It is not intended to be and should not be interpreted as medical advice or a diagnosis of any health or fitness problem, condition or disease; or a recommendation for a specific test, doctor, care provider, procedure, treatment plan, product, or course of action. Med Help International, Inc. is not a medical or healthcare provider and your use of this Site does not create a doctor / patient relationship. We disclaim all responsibility for the professional qualifications and licensing of, and services provided by, any physician or other health providers posting on or otherwise referred to on this Site and/or any Third Party Site. Never disregard the medical advice of your physician or health professional, or delay in seeking such advice, because of something you read on this Site. We offer this Site AS IS and without any warranties. By using this Site you agree to the following Terms and Conditions. If you think you may have a medical emergency, call your physician or 911 immediately.